Within your "Internet Options" control panel, under the "Connection" Tab you can specify a Dial-Up Networking entry to initiate upon the start-up of your Internet Applications. Depending on what versions on Windows 95 and Internet Explorer you have installed, this option will be listed as one of the following:
Connect to the Internet as needed.
Always dial my default connection.
Connect to the Internet using my modem.
Select whichever option is present, and make sure it has your VISI Dial-Up Networking entry selected as the default connection.